Revision rates of one new and two established hemiarthroplasty heads: a comparative cohort study from the Swedish Arthroplasty Register.

IF 1.3 4区医学 Q3 ORTHOPEDICS

HIP International Pub Date : 2024-09-19 DOI:10.1177/11207000241282081

Cecilia Rogmark, Jonatan Nåtman, Sören Overgaard, Maziar Mohaddes

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引用次数: 0

Abstract

Introduction: The anatomical Lubinus SPII-stem is commonly used in hemi-arthroplasty for femoral neck fractures (FNF), combined with either the bipolar Variocup, the Unipolar Head (UH) and a newly introduced unipolar Modular Trauma Head (MTH). Similar constructs like the MTH are reported to have risk of corrosion and wear. This is the first publication evaluating the MTH.

Aim: To describe the revision rate of the SPII-stems/heads which were divided into 3 groups (Variocup, UH, MTH). The head types are compared by their rate of revision at 2 years, due to any cause and to dislocation. Revision and mortality rates up to 10 years are reported.

Methods: This observational cohort study based on prospectively registered data from the Swedish Arthroplasty Register included 33,059 patients with hemiarthroplasty 2005-2021 due to FNF. SPII-stems combined with Variocup (n = 7,281), UH (n = 23,980), MTH (n = 1,798) were included. The follow-up ended at 10 years for Variocup and UH, for MTH at 2 years. Kaplan-Meier survival analyses was used, with a 95% confidence interval (CI). Patients were censored at death or at the end of the study (31 December 2021).

Results: The 2-year revision rate regardless of cause was similar between the groups: after Variocup 3.5% (CI, 3.1-4.0), UH 3.1% (CI, 2.9-3.4), MTH 3.5% (CI, 2.6-4.5).At 10 years, the Variocup and UH had similar revision rates; 4.6% (CI, 4.0-5.2) and 5.0% (CI, 4.4-5.6).For revision due to dislocation at 2 years Variocup 2.3% (CI, 1.9-2.7) had an inferior outcome compared to UH 1.5% (CI, 1.3-1.7). The MTH had an intermediate outcome, 1.7% (CI, 1.0-2.3). Variocup had a higher dislocation related revision rate, until the 10th year.The 2-year-mortality was 36% (CI, 35-37) after Variocup, 43% (CI, 42-43) after UH and 44% (CI, 41-47) after MTH.

Conclusions: The hemi-heads have comparable revision rates within 2 and 10 years. The new MTH performs similar to the standard UH. The bipolar Variocup is associated with more revisions due to dislocation.

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一个新的半关节成形术头和两个已成形的半关节成形术头的翻修率：来自瑞典关节成形术登记处的一项队列比较研究。

简介：解剖型Lubinus SPII-stem常用于股骨颈骨折（FNF）的半关节成形术，与双极Variocup、单极头（UH）和新推出的单极模块化创伤头（MTH）组合使用。据报道，MTH 等类似结构存在腐蚀和磨损风险。目的：描述分为三组（Variocup、UH 和 MTH）的 SPII 支架/头的翻修率。通过2年内因任何原因和脱位导致的翻修率，对不同类型的头进行比较。同时还报告了长达 10 年的翻修率和死亡率：这项观察性队列研究以瑞典关节成形术登记处的前瞻性登记数据为基础，纳入了2005-2021年因FNF而接受半关节成形术的33059名患者。其中包括SPII-stems结合Variocup（n = 7,281）、UH（n = 23,980）和MTH（n = 1,798）。Variocup 和 UH 的随访期为 10 年，MTH 的随访期为 2 年。采用卡普兰-梅耶生存分析法，置信区间（CI）为95%。患者死亡或研究结束（2021年12月31日）时进行剔除：不考虑原因，两组患者的两年翻修率相似：Variocup术后为3.5%（CI，3.1-4.0），UH术后为3.1%（CI，2.9-3.4），MTH术后为3.5%（CI，2.6-4.5）。10年后，Variocup和UH的翻修率相似；分别为4.6%（CI，4.0-5.2）和5.0%（CI，4.4-5.6）。2年后，Variocup因脱位导致的翻修率为2.3%（CI，1.9-2.7），低于UH的1.5%（CI，1.3-1.7）。MTH的结果居中，为1.7%（CI，1.0-2.3）。Variocup术后2年死亡率为36%（CI，35-37），UH术后为43%（CI，42-43），MTH术后为44%（CI，41-47）：结论：半头盔在 2 年和 10 年内的翻修率相当。新型 MTH 的性能与标准 UH 相似。双极Variocup因脱位导致的翻修率较高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

HIP International 医学-整形外科

CiteScore

4.20

自引率

0.00%

发文量

审稿时长

2 months

期刊介绍： HIP International is the official journal of the European Hip Society. It is the only international, peer-reviewed, bi-monthly journal dedicated to diseases of the hip. HIP International considers contributions relating to hip surgery, traumatology of the hip, prosthetic surgery, biomechanics, and basic sciences relating to the hip. HIP International invites reviews from leading specialists with the aim of informing its readers of current evidence-based best practice. The journal also publishes supplements containing proceedings of symposia, special meetings or articles of special educational merit. HIP International is divided into six independent sections led by editors of the highest scientific merit. These sections are: • Biomaterials • Biomechanics • Conservative Hip Surgery • Paediatrics • Primary and Revision Hip Arthroplasty • Traumatology